124 gr Hammer Hunters in 6.5 PRC

[choovhntr]

It’s a 7.5. Twist. I knew I was going to be running coppers along with the 156 bergers so I went that route. Yea I would say your plenty broken in hahaha. I hit a flat spot in velocity around 53 grains as well going 3040. Hopefully the faster load works out. Another thing you could check for is a carbon ring. I got a bad one in my 300 win mag which caused a pressure spike. Once I cleaned it out, pressure went back down.

 

[OXN939]

I ran up to pressure out of curiosity, but finding the node at a speed I am happy with was a win-win. Main reason I don't push it faster is to extend the life of the unobtanium called ADG brass in 6.5 PRC.

.110 off the lands provided best accuracy at 100 yards, but i could get down to 20 though if I wanted

As a side note, for my 300 WM...I run it for speed and don't go after a node so my ES is closer to 30 FPS which is fine for a sub 750 yard hunting rifle.

Anyone have any experience using H4831SC with the 124HH? RL23 appears to be unobtanium rn

 

[JakeSCH]

Anyone have any experience using H4831SC with the 124HH? RL23 appears to be unobtanium rn

I would start with 50 grains and work my way up to pressure. This is based on barne's load data https://www.barnesbullets.com/wp-content/uploads/2021/05/6.5-PRC.pdf

My guess is that you will have pressure signs between 55 to 57 grains. Also as a FYI, VV560 is producing some insane results with that combo...guys are getting over 3400 fps.

 

[OXN939]

I would start with 50 grains and work my way up to pressure. This is based on barne's load data https://www.barnesbullets.com/wp-content/uploads/2021/05/6.5-PRC.pdf

My guess is that you will have pressure signs between 55 to 57 grains. Also as a FYI, VV560 is producing some insane results with that combo...guys are getting over 3400 fps.

Great looks on that, thanks! Fingers crossing I can get them sub MOA in the neighborhood of 3000 or 3100 FPS. Will try that Barnes data. You guys running magnum or standard large rifle primers for 6.5 PRC?

 

[JakeSCH]

Great looks on that, thanks! Fingers crossing I can get them sub MOA in the neighborhood of 3000 or 3100 FPS. Will try that Barnes data. You guys running magnum or standard large rifle primers for 6.5 PRC?

I run standard large rifle for them.

 

[parshal]

I tested 4831 in a 65SS with the 124's. It's real close in capacity and performance to the PRC.

These were all shot in the same sitting.

58.5 - 3181 with 215
58.5 - 3190 with 210
59 - 3205 with 210
60 - 3335 with 215, lots of pressure

 

[OG-danimal]

I was in the mid 3200s and touching 3300 with the 124s...still haven't finished that project but I'm expecting 3250 pretty easily

Was using rl16

RL 16? What was your powder charge?